Spring oil



Patented Dec. 14, 1926.

UNITED STATES 1,610,458 PATENT OFFICE.

HEN RY LYON S, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO DOHER'IY RESEARCH COMPANY, on NEW YORK, N. Y.,

A CORPORATION OF DELAWARE.

No Drawing. Application filed January The present invention relates to that classof liquid lubricants adapted for use on leaf springs and the like and for loosening and preventing rust.

There are known several compositions of matter called-spring oils on account of their most common use. Spring oils should have the qualities of high capillarity,

rust removing or cutting, and rust prevent-- 1ng, combined with good lubrlcatmgquallty.

pound or composition for the purposes and-- having the characteristics just mentioned, to

be able to use mineral lubricating oil as the bases of the composition on account of its chemical inertness, giving absence of rancidity, its good lubricating qualities, its power of protecting against rust, and its comparative cheapness. The flat surfaces between leaf springs do not readily hold a lubricating oil and therefore it is desirable in obtaining the best form of lubrication to use a lubricating oil having a comparatively high viscosity in order to maintain the lubrication of the springs after the oil has once penetrated be tween them. Mineral lubricating oils, however, do not'of themselves have high penetrating or rust removing powers, and it-is necessary to incorporate. into the compound or composition an ingredient which will impart these properties thereto. The present application is based primarily a on the discovery by the applicant that secondary alcohols, such as secondary butyl alcohol or. isopropyl alcohol, not only are very good solvents for mineral lubricating oils,

but impart to a composition of which they 'are a part a high capillarity or power of penetration as well as high rust cutting or iloosening power. The secondary alcohols which are preferably used. in the present composition are the secondary alcoholsderived as' a by-product of petroleum. The olefine content of crackedpetroleum oil 22, 1925. Serial No. 3,948.

gases serves as the source for manufacture of secondary alcohols, isopropyl, secondary butyl and amyl alcohols. These alcohols are all excellent solvents for petroleum oils and at the same time they all possess high penetrating powers. To assist the al-' cohol in penetrating between the leaves of the springs or into the threads of bolts and nuts, it is preferred to use kerosene which has a comparatively high penetrative power. The kerosene assists the alcohols in carrying the lubricating oil between the rust layers,' and after it has penetrated therein the alcohol and kerosene evaporate to leave the lubricating oil in place.

In the preferred form of the invention, the ingredients are employed in the following proportions:

Per cent.

Secondary butyl alcohol 25 South Texas pale lubricating oil, 300

viscosity 50 Kerosene 25 While the above example is the preferred form of the invention, I do not limit myself thereto either as to the ingredients or the proportions stated. For instance, another kind of lubricating oil may be used in place of the South Texas oil and'the proportion of kerosene reduced or. the kerosene omitted S entirely. Higher or lower percentages'of kerosene may be employed, depending upon the purpose for which the oil is to be used.

ere high penetrating power is required, high percentages of kerosene may be used because the kerosene assists the alcohol in penetrating into the space between metal surfaces, and thus reduces the amount of-alcohol which is necessary in order to lubricafe the metal surfaces or loosen the rust therebetween. When changes are made in the proportions or characteristics. of the other in redients, the proportion of secondary alco 01 is to be changed accordingly to preserve the high penetration and high capillarity characteristics of the composition as far as possible. Moreover, although its availability for use with mineral and especially parafline base oils is one of the important advantages of the secondaryalcohols,-I 'do not limit myself to mineral oils. Also finely pulverized graphite may be used in small amounts in the composltion according to the present invention, if desired. It will be understood, moreover, that whereever the degree of viscosity is referred to, both 1n the foregoing description and in the appended claims, the viscosity is asanned' to be measured by the Suybolt viscosimeter. \Vhere percentages are referred to they are to be taken as percentage by volume.

Having thus described my invention, I claim:

1. A composition of matter for oiling springs and for like purposes, comprising a lubricating oil and a secondary alcohol.

2. A composition of matter for oiling springs and for like purposes comprising a mineral lubricating oil and a secondary alcohol of mineral oil origin.

0. A composition of matter for oiling springs and for like purposes comprising a lubricating oil and secondary butyl alcohol.

4;. A composition of matter for oiling springs and for like purposes comprising 2C kerosene, amineral lubricant, and a secondary alcohol.

5. A composition of matter for oiling springs and for like purposes comprising kerosene, a mineral lubricant, graphite and secondary butyl alcohol.

6. A composition of matter for oiling springs and for like purposes comprising twenty-five percent of kerosene, twenty-five percent of secondary butyl alcohol, and fifty percent of amineral lubricating oil of about 300 viscosity Saybolt.

7. A composition of matter for oillng springs and for like purposes comprising kerosene, a mineral lubricant, and secondary butyl alcohol.

In testimony whereof I afiiz; my signature.

HENRY N. LYONS. 

